Keyphrases
- xml schema
- user interface
- conceptual model
- xml documents
- xml data
- regular expressions
- integrity constraints
- data exchange
- relational databases
- type definitions
- semi structured documents
- markup language
- object oriented
- relational schema
- metadata
- schema mappings
- semantic information
- target schema
- data management
- general purpose
- relational data
- data model
- high level
- data sets